From the course: OpenShift Essential Training: Container Orchestration and Deployment

Introduction to Kubernetes - OpenShift Tutorial

From the course: OpenShift Essential Training: Container Orchestration and Deployment

Start my 1-month free trial Buy for my team

Introduction to Kubernetes

“

- [Host] Imagine running a restaurant where every dish is perfectly timed and served without you lifting a finger. That's Kubernetes for your apps. In this video, we'll talk about how Kubernetes helps in orchestrating and managing containerized applications. Kubernetes is a container orchestration platform. In simple terms, Kubernetes helps you manage and deploy applications across multiple computers instead of doing it manually. Think of it as a system that ensures your application is always running the way you want. To manage applications effectively, Kubernetes uses several core components. Nodes are the computers, real or virtual, that run your applications in Kubernetes. Pods are like boxes that hold one or more containers. Services make sure your apps can be reached by other parts of the system or by users. Deployments tell Kubernetes how to run your apps and how many copies should be running and how to update if necessary. And lastly, namespaces, which are like folders that help you keep things organized in your Kubernetes system, especially when you have many apps or teams. Think of Kubernetes like running a big restaurant. You need the manager, in our case, the master node and a team of cooks, in our case, the worker nodes to get everything done smoothly. But like in any restaurant, you also have other roles running, such as the ones running on the master node or the worker nodes. On the master node, we have the API server, which acts like the front desk taking customer orders, or in our case, commands from users. The controller manager who keeps tabs on all tasks and makes sure nothing falls through the cracks. The scheduler who decides which cook, or in our case worker node should handle each order. And lastly, the ETCD, which is the restaurant's notebook that records everything. On the worker nodes, we have the Kubelet, which makes sure all dishes, or in our case containers are cooked correctly. The Kube-proxy, which handles all the kitchen traffic, so food gets to the right table. And finally, the container runtime, which runs the actual containers. So now that we have a baseline understanding of how Kubernetes works, let's dive into OpenShift in the next video.

Contents